2-Methyl-2,6-diazaspiro[4.5]decan-3-one

4-{3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]pentanamido}benzoic acid

(3S)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)benzoyl]piperidine-3-carboxylic acid

2-{[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]methyl}cyclopentane-1-carboxylic acid

2-(1-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-1,2,3-triazol-4-yl}-N-methylformamido)-2-methylpropanoic acid

2-(2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4,4-dimethylpentanamido}ethoxy)acetic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-ynamido]-2-methylbenzoic acid

1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanoyl}-1,2,3,6-tetrahydropyridine-4-carboxylic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[methyl(thian-4-yl)carbamoyl]propanoic acid

2-[8-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methyloctanamido]-2-methylpropanoic acid

2-{1-[8-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)octanoyl]azetidin-3-yl}acetic acid